IdentityType (additional) rec and induc like others; convenience methods for reflexivity, plus-type.
IdentityType (additional) rec and induc like others;
convenience methods for reflexivity, plus-type.

siddhartha-gadgil/ProvingGround,siddhartha-gadgil/ProvingGround,siddhartha-gadgil/ProvingGround,siddhartha-gadgil/ProvingGround